CN200968428Y - Reversible turning structure of butterfly valve butterfly plate - Google Patents
Reversible turning structure of butterfly valve butterfly plate Download PDFInfo
- Publication number
- CN200968428Y CN200968428Y CN 200620079260 CN200620079260U CN200968428Y CN 200968428 Y CN200968428 Y CN 200968428Y CN 200620079260 CN200620079260 CN 200620079260 CN 200620079260 U CN200620079260 U CN 200620079260U CN 200968428 Y CN200968428 Y CN 200968428Y
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- CN
- China
- Prior art keywords
- butterfly plate
- butterfly
- valve
- cam
- disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to the reversible revolution structure of a disc of a butterfly valve, which aims at making the disc revolve towards the off-position while being at the open position to reduce the deformation of the butterfly valve and form the enough large friction moment so as to overcome the dynamic torque of the fluid water. A hand wheel 1 is arranged on the upper end of a valve stem 8 which is arranged inside the valve body 1 apostrophe by an axle sleeve; a bevel axle sleeve 4 is fixed on a disc groove 5 by a jam nut 2, a composite dished spring set 3; a bevel on the lower end of the bevel axle sleeve 4 and the bevel on the upper end of the disc groove 5 form a wedge shape; the disc 7 is arranged on one side of the valve stem 8 through the disc groove 5; a cam 6 is arranged on the valve stem 8; the disc groove 5 and the cam 6 are in the clearance fit; the width of cam 6 is equal to the width of the disc groove 5.
Description
Technical field
The utility model relates to the sealing configuration of valve, specifically is a kind of reversible revolving structure of butterfly plate of two-way pressure butterfly plate metal hard-sealing butterfly valve.
Background technique
The distortion of double stub shaft butterfly plate packaged type hard seal butterfly valve is bigger in the prior art, can not form enough friction torque and overcome the fluid water braking torque.
Summary of the invention
The purpose of this utility model is to make butterfly plate when the enable possition, realizes that butterfly plate can turn round to closed position, reduces the distortion of butterfly valve, forms enough big friction torque, to overcome the fluid water braking torque.
The reversible revolving structure of butterfly valve butterfly plate, handwheel 1 is installed in the upper end of valve rod 8, valve rod by a sleeve assembly be installed in valve body 1 ' in, inclined-plane axle sleeve 4 is fastened on the butterfly plate race 5 by lock nut 2, compound butterfly spring group 3, the inclined-plane of inclined-plane axle sleeve 4 lower ends forms a wedge with the inclined-plane of butterfly plate race 5 upper ends and cooperates, butterfly plate 7 is installed in valve rod 8 one sides by butterfly plate race 5, valve rod 8 is provided with a cam 6, butterfly plate race 5 is a Spielpassung with cam 6, and the width of cam 6 equals the width of butterfly plate race 5.
Usefulness of the present utility model is: in the reversible revolving structure of butterfly valve butterfly plate, be provided with the axle sleeve inclined-plane with the race inclined-plane, utilize the friction torque between the inclined-plane to overcome the rotation inhibition of fluid water braking torque, realized the reversible rotation of 90 ° of butterfly plates and the keying of butterfly valve butterfly plate; The compound butterfly spring group of this structure is out of shape for a short time, and elastic acting force is big, can form enough friction torque and overcome the fluid water braking torque.
Description of drawings
Fig. 1 is a structural drawing of the present utility model, and Fig. 2 is the motion schematic representation of butterfly plate.
Embodiment
As shown in Figure 1, handwheel 1 is installed in the upper end of valve rod 8, valve rod by a sleeve assembly be installed in valve body 1 ' in, inclined-plane axle sleeve 4 is fastened on the butterfly plate race 5 by lock nut 2, compound butterfly spring group 3, the inclined-plane of inclined-plane axle sleeve 4 lower ends forms a wedge with the inclined-plane of butterfly plate race 5 upper ends and cooperates, butterfly plate 7 is installed in valve rod 8 one sides by butterfly plate race 5, and valve rod 8 is provided with a cam 6, and butterfly plate race 5 is a Spielpassung with cam 6.The width of cam 6 equals the width of butterfly plate race 5.Be called the eccentric circle constantbreadth cam in the utility model cam 6.
As shown in Figure 2, eccentric circle constantbreadth cam 6 on the valve rod 8 clockwise rotates drive butterfly plate 7 and moves to the B point from the A point, butterfly plate 7 breaks away from valve body sealing surface, valve rod 8 rotations drive butterfly plate 7 to the rotation of C point, and fluid pressure action is on butterfly plate, because valve rod both sides butterfly plate fluid pressure action point is unequal with the distance of gyration center, hydrodynamic pressure has hydrodynamic(al) moment to butterfly plate, and eccentric circle constantbreadth cam 6 and butterfly plate race 5 are in Spielpassung, and 7 revolutions have inhibition to hydrodynamic(al) moment to butterfly plate.Butterfly plate 7 moves to the B point from the A point, again as shown in Figure 1, exert pressure to the inclined-plane of inclined-plane axle sleeve 4 in the inclined-plane of butterfly plate race 5, the inclined-plane of the inclined-plane axle sleeve 4 compression combined butterfly spring group 3 that moves up produces distortion, when compound butterfly spring group 3 produces the deformation force reaction on inclined-plane axle sleeve 4 and butterfly plate 7 race inclined-planes, the friction torque that this reaction is created in inclined-plane axle sleeve 5 and butterfly plate 7 race inclined-planes in valve rod 8 revolution is during greater than the fluid water braking torque, and valve rod 8 can drive butterfly plate 7 revolutions.
As shown in Figure 2, valve rod 8 is around the rotation of O point, and the eccentric circle constantbreadth cam 6 on the valve rod 8 clockwise rotates the drive butterfly plate and moves to the B point from the A point, and butterfly plate 7 breaks away from valve body sealing surfaces, and valve rod 8 continues half-twists, and butterfly plate 7 moves to the C point from the B point, and butterfly valve is opened.If when fluid flowed to the right from the butterfly valve runner, the hydrodynamic(al) moment of fluid was ordered about the butterfly plate 7 oriented trend that are rotated counterclockwise, butterfly plate 7 when the enable possition, the trend of oriented closing direction motion.Valve rod 8 drives butterfly plate 7 and turns clockwise 90 °, and butterfly valve cuts out.When if medium flows left from the butterfly valve runner, the hydrodynamic(al) moment of medium is ordered about butterfly plate 7 to the clockwise direction rotation, and eccentric circle constantbreadth cam 6 can't drive butterfly plate 7 and rotate to opening direction.
Claims (1)
1, the reversible revolving structure of butterfly valve butterfly plate, handwheel (1) is installed in the upper end of valve rod (8), valve rod (8) is installed in the valve body (1 ') by a sleeve assembly, it is characterized in that inclined-plane axle sleeve (4) is by lock nut (2), compound butterfly spring group (3) is fastened on the butterfly plate race (5), the inclined-plane of inclined-plane axle sleeve (4) lower end forms a wedge with the inclined-plane of butterfly plate race (5) upper end and cooperates, butterfly plate (7) is installed in valve rod (8) one sides by butterfly plate race (5), valve rod (8) is provided with a cam (6), butterfly plate race (5) is a Spielpassung with cam (6), and the width of cam (6) equals the width of butterfly plate race (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079260 CN200968428Y (en) | 2006-06-21 | 2006-06-21 | Reversible turning structure of butterfly valve butterfly plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079260 CN200968428Y (en) | 2006-06-21 | 2006-06-21 | Reversible turning structure of butterfly valve butterfly plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200968428Y true CN200968428Y (en) | 2007-10-31 |
Family
ID=38967999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620079260 Expired - Fee Related CN200968428Y (en) | 2006-06-21 | 2006-06-21 | Reversible turning structure of butterfly valve butterfly plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200968428Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252104A (en) * | 2010-09-08 | 2011-11-23 | 赵平利 | Micro-power opened butterfly valve |
| CN104565398A (en) * | 2014-09-18 | 2015-04-29 | 刘茜 | Wear-resistant sealing butterfly valve |
-
2006
- 2006-06-21 CN CN 200620079260 patent/CN200968428Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252104A (en) * | 2010-09-08 | 2011-11-23 | 赵平利 | Micro-power opened butterfly valve |
| CN104565398A (en) * | 2014-09-18 | 2015-04-29 | 刘茜 | Wear-resistant sealing butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |